CODATA recommended values of physical constants.

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Ralph Schleicher <>


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CODATA recommended values of physical constants. See <>. All CODATA recommended values are defined as a constant and as a function. The function returns three values, the value of the constant, the standard uncertainty, and the relative standard uncertainty. Floating-point numbers are of the type `long-float'. Please note that some of the constants have values which can not be represented as IEEE 754 single precision floating-point numbers. Usage: (ql:quickload :codata-recommended-values) (defun E (m) (symbol-macrolet ((c codata-recommended-values:speed-of-light-in-vacuum)) (* m c c))) The latest values are available via the `codata-recommended-values' package. If you need a previously issued value, append the year to the package name, for example, `codata-recommended-values-2010'.

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